Rb4SnO4
Rb4SnO4 is a thermodynamically stable, semiconducting complex oxide utilized in the study of transparent conducting materials.
About Rb4SnO4
Rb4SnO4 is a complex oxide that sits firmly on the convex hull, indicating significant thermodynamic stability. As a semiconducting member of the transparent conducting oxide class, it represents a specialized material system for electronic applications where optical transparency and controlled conductivity are required. Its structural diversity is highlighted by multiple reported configurations across major materials databases. This compound is of particular interest to researchers investigating the interplay between heavy alkali metals and tin-based oxygen frameworks. Its electronic character suggests potential utility in thin-film technologies and advanced optoelectronic devices that demand stable, wide-gap semiconducting behavior.
Key Properties
Cross-validated computational properties for Rb4SnO4, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Rb4SnO4. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for Rb4SnO4, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| — | — | 2.44 | 0.0000 | -1.662 | — |
| P-1 (No. 2) | triclinic | 2.36 | 0.0000 | -1.660 | — |
| P-1 (No. 2) | triclinic | 2.16 | 0.0000 | -4.851 | 4.27 |
| — | — | 2.56 | 0.0506 | -1.612 | — |
| — | — | 1.38 | 0.1971 | -1.465 | — |
| P-1 (No. 2) | triclinic | — | — | — | 4.31 |
| P-1 (No. 2) | triclinic | — | — | — | 4.20 |
| P-1 (No. 2) | triclinic | — | — | — | 4.08 |
| P-1 (No. 2) | triclinic | — | — | — | 4.26 |
Applications
Where Rb4SnO4 is used.
Frequently Asked Questions
Common questions about Rb4SnO4, answered from cross-validated data.
What is Rb4SnO4?
Rb4SnO4 is a thermodynamically stable, semiconducting complex oxide utilized in the study of transparent conducting materials.
What is Rb4SnO4 used for?
What is the band gap of Rb4SnO4?
Is Rb4SnO4 a metal, semiconductor, or insulator?
Is Rb4SnO4 thermodynamically stable?
What is the crystal structure of Rb4SnO4?
How many polymorphs of Rb4SnO4 are known?
What elements does Rb4SnO4 contain?
Where does the data for Rb4SnO4 come from?
How It Compares
Within the transparent conducting oxides class.
Within the broader family of transparent conducting oxides, Rb4SnO4 occupies a distinct niche compared to more common binary oxides like ZnO or complex perovskites like BaSnO3. While materials such as BaSnO3 are frequently studied for their high-mobility electron transport, Rb4SnO4 provides a different chemical environment characterized by its unique alkali-rich stoichiometry, offering a contrast to the more traditional zinc-based spinels like ZnGa2O4 or ZnCr2O4.
Related Compounds
Other Transparent Conducting Oxides in the database.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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